Improvement in carbon-paper



A. B'. SIMUNDS.

Carbon-Paper.

No.l67,36l.

Patented Aug. 31,1875.

ALONZO B. SIMONDS, OF NEW YORK, N. Y.

IMPROVEMENT IN CARBON-PAPER.

Specification forming part of Letters Patent No. 167,361, dated August 31, '1875 application filed June 23, 1875.

To all whom it may concern:

Be it known that I, ALONZO B. SIMoNDs, of New York city,in the State of New York, have invented certain new and useful Improvements relating to Carbon-Paper for Manifold Writing; and I do hereby declare that the following is a full and exact description thereof.

I designate as carbon paper the paper, whether adapted to produce black or other colored impressions, which is prepared with carbon or other material, so that it, on being laid between sheets of other paper, and traversed over by a proper stylus, will produce a corresponding impression on the paper above and below. Itis important to preserve both surfaces of the carbon-paper for active use.

It seems to he a necessary condition to the proper sensitiveness and usefulness of the paper that it shall be of a character to readily part with its coloring matter. This involves considerable inconvenience in the handling, particularly whenfthegingers Aarewmoistened with perspiration.

I have discovered, and practically applied, i means of greatly facilitating convenience and neatness in the use of such paper without in any considerable degree interfering with its efficiency, or seriously increasing its cost.

The accompanying drawing represents what I consider the best means of carrying out the invention.

Ais a sheet ofordinary carbon paper. Ipuneh, by machinery or otherwise, a series of holes, a, along its edges. I then apply thereon strips of thin, well-sized ordinary writing-. paper, b, folding it so that it shall cover the edgeand extend inward upon both faces of the carbon-A paper to an extent a little beyond the holes a. I cement this paper b by meansof silicate of soda, applied in the mannerfof micilage. The surfaces of the writing-paper b are presented directly together through the' holesqgwOn those surfaces, therefore, the cementing material acts directly to unite the two surfaces of the paper b together. The silicate-of soda solution forms a strong eementing material on those surfaces, and also acts with some effect on the oleaginous surface ofthe carbon-paper A.

The sheets thus prepared may be handled by thenedgeswithmleanlines 't The paperbnot only forms a clean handle by which to take hold of the carbon-paper, but also stili'- ens it, so that it is much more easily placed in position and changed as required. The thickness of the edging material b may be so little as to induce no diflculty in piling up the carbon-paper and the thin transparent paper on which the impressions are made to the ordinary number of thicknesses. Some writers can i handle a stylus with such effect as to write plainly through from thirty to fifty sheets of paper. A greatly-increased thickness at the edges of the carbon-paper would induce mischief when I propose to use material other than common writing-paper for the edging material b.

,ceeded the best with hard writing-paper and a tolerably thick solution of silicate of soda.

YI claim as -my invention- Impression writing-sheets having a stiffening materiahb, cemented uponthe edge through perforations in the principal sheet A, substantially as herein specilied.

In testimony whereof I have hereunto set my hand this 21st day of June, 1875, in the presence of two subscribing witnesses.

A. B. SIMONDS. Witnesses:

HENRY GENTNER, WM. O. DEY. 

